Portable lamp stand



A ril 23, 1929. G. POTSTADA PORTABLE LAMP STAND Filed June 29, 1927 R m m m Patented Apr. 23, 1929.

UNITED STATES I GEORGE POTSTADA, OF OAKLAND, CALIFORNIA.

PORTABLE LAMP STAND.

Application filed June 29 This invention relates to a portable lamp stand, and an object of the inventioiris to provide a form of spun base which can be used for lamp stands oi several diliorent heights by merely changing the height of the various parts used in connection there with, the same base being used for several dill'erent types of stands while the shank portion can be enlarged or reduced in height as may be deemed desirable.

Another object of the invention is to provide means for securing the stand on the edge of the table in almost any desired position, the lamp securing clamps being rotatable and ezitcndible at will to clamp over almost any object.

Another object of: the invention to produce a clamp which is extremely simple to make and which can be turned to any desired position. I p

Another object of the invention is to pro duce a lamp socket holder which will be substantially universal in ability to rotate the lamp to various positions, and which head will fit almost any of the ordinary lamp sockets, the only change for a tall stand or for a shorter stand being in the length of the in termediate shanks used between the base and the lamp socket holder.

Another object of the invention is to provide an extremely simple means for securing the lamp socket holder to the top of the stand, said means being sufficiently flexible to allow the lamp socket to be turned to any position at will, butat the same time having sullicient friction to hold it in any desired frictional engagement with the top oi the stand.

Other objects of the invention will be apparent as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied to the same portion throughout tl'lOSGVGlZll figures of the drawings and of which there may be modifications.

Figure 1 is a side elevation of the lamp stand as it appears secured to the edge of a table with a common form of lamp shade applied to the globe,

Figure 2 is a vertical sectional view through the stand and socket holder,

Figure 3 is a bottom view of the view shown in Figure 2, showing the securing hook.

Figures 4 and 5 are side and edge elevations of the movable socket holder.

The base of the stand consists of a bell 192?. Serial no. 202,233.

shaped 'membcr 1' with straight bottom edges 2 -lormed at its lower portion. inside thc'b ell shapedmember there is bottom member 3 which has its outer edges formed downwardly and.inwardly as at 4 to form a space for holding and retaining rubber rings 5 to prevent the stand from scratching polished surfaces. The inner portion of the base has a large head 6. and a smaller bead 7, the object beiiig to st'f en the member 3 and to provide for the retention of the spiral spring 8 in place.

The lower end of the spiral is wider than the upper end and is seated in the bead 7 while the upper end of the spiral is dravm down close enough so that it cannot pass over the flattened head 9 formed at the top of the rod 10. said rod ha ring the lun-izrmtally turned arm 11 on. which a rubbcrtube 12 is tightly placed. I

'lhcbasc l but a shallow one, and is cut oil? to tit the outwardly pressed beading 13 on the lower portion of the longer shank 1%, this beading is forced outwardly in any well known manner to secure the standard 14- to the base 1, and said standard may be oii dilTerent lengths as may be required. It will be seen that the top of the standard 14; is inturned slightly as indicated at 15, and that a flattened washer 1.6 with downwardly turned edges 17 to make a smooth connection with the top of the standard 14- used :tor the support of the socket holdingniember 18, raised shoulders 19 are provided each side of the member 18. A bolt 20 is used to secure the socket holding member 18 to the top oi the standard 14. An inner washer 19 is used to ive the necessar friction and i holding elliect to the bolt 20 to enable the socket holding member 18 to be secured in place. A spring washer 21 and nut 22 are used on the bolt 20 to connect all of the several parts together.

The socket holding member 18 is U-shaped and has two recessed portions 2%, 25, which recessed portions extend into the circular portion of the secondary socket holder 26, the latter having two cars 27, 28 which extend directly into the threaded portion of the socket as indicated at 29. The usual set screw 30 secures the socket and the secondary socket holder 26 together. One side of the secondary socket holder has an insulated bushing 31 to allow the electric light cord 32 to pass outwardly without being injured by the movement of the socket holding devices. A bolt 37 connects the socket holding member 18 With the socket holder 26, and permits the lamp to be moved on a horizontal axis.

1th the present construction 1t Wlll be seen tlmtthe book 11 can be moved toany desired position, or the base may be hung upon a nail by using the hole 11. At the same time the lamp may be turned in any desired position on the bolt 20, while at the same time it may 3e turned on the bolt 37 which ex tends right angles to the axis of'the stand thereby giving up almost universal movement either to the lamp holnnig heel; or to the stsi or to th* lamp itself, as maybe desired. resnect to the other, and the i V I i V 7 rubber EH :nl always proreet polished surfaces to which the lamp will be secured.

The socket is of any Well knowntype to receive the lamp with thethreaded ferrule as indicated at 34, and any desired type oi "lamp shade may be secured tot-he lamp in any Well known Way, but the lampshade forms no part of the present invention therefore. is not more completely described;

Having thus described my invention, What T desire to secure by Letters Patent of the United States is as follows, but modifications may be made 111 carrying out the invention as shown in the drawing and in the above particularly described form thereof, Within the pin-viewer the annexed claims.

Ielaim: 5 v 1. A lamp stand comprising abell shaped member ha ling a depending cylindrical member, 21 bottom member adapted to fit inside of saidcylindrical member, a space between st the'sn'm-ll end by the flattened e said members adapted to impinge on an anagainst the bottom member, and means to zone hold a lamp at dilt erentnngles and posit onsaid bell shaped memb '2. A laino stand compr mg a bell shaped use her a. cylindrical bottom edge, a member inside said cylindrical edge e c iindrical ed spaced from said first bottom edge, a ,l silient between said eeges and projecting there'tronnn spring clamp re ined i1 said base members, a standard fixed to said bellv shaped base, a cap von the top 01' e111 i s on said cap.

derd, a U shaped member 7 Y her-yon the inside of said st ndard, a so t, and ut "to hold'said parts together, inwardly n'ojectieg portions'in the free ends of said L ysl'iaped member, a lamp soclretiholding member havingral circular poi:-

tion, said circular portion being adapted to i be engaged by said inwardlyrprojectingportions. i p 7 In testimony whereof I have hereunto set my hand this 22d day of June, A. D; 1927. I i GEORGEPOTSTADAQ 

